Material and photography

This study is based on a single specimen of Burmese amber (CNU-008021) collected from Noije Bum, Tanaing, Kachin, Myanmar. The specimen is housed at Key Laboratory of Insect Evolution and Environmental Changes, Capital Normal University, Beijing. The holotype of the new genus and species is embedded in a cuboid amber piece. The holotype was examined under a Leica M205C dissecting microscope and photographed using a Visionary Digital BK Lab Plus system (Austin, Texas). The source images were aligned and stacked in Helicon Focus (Ukraine). Fluorescence images of the fossil were made on a Zeiss LSM 880 (with Airyscan) confocal microscope (Germany) with a 488 nm laser. Scanning electron microscopic images of Haeterius were obtained using a Tabletop Hitachi Microscope TM3030Plus (Japan). Morphological terminology follows Ślipiński and Mazur (1999), Zhou et al. (2018), and Caterino and Tishechkin (2015).